At the moment, all UK motorists are covered by the same road regulations,
taxes and driving licence rules, all of which are handled centrally for the
whole country. But if Scotland becomes independent, it would have to create
agencies of its own and motorists would face different rules, regulations
and taxes on either side of the Border, according to the UK Government.

The cost of setting up the new agencies to look after driving licences,
vehicle testing and accident investigation